The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2003
Filed:
Apr. 23, 2002
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
An infrared light irradiation lamp comprises a lighting chamber S formed by a lamp body and a front lens , a reflector provided in the lamp body , a light source provided ahead of the reflector in the lighting chamber S, and a cylindrical globe for infrared light formation which is provided to cover the light source and serves to shield a visible light and to transmit only an infrared light, wherein diffusion steps and are provided in a peripheral region of the light source in the reflector and/or a region in the front lens corresponding to the peripheral region of the light source in the reflector. Thus, a red light component L of a visible light transmitted through the globe and guided to the peripheral region of the light source in the reflector is diffused and reflected (L , L ) or is diffused and emitted through the region of the central part of the front lens so that the luminous flux density of the red light component distributed forward is reduced to dilute a red light emitted from the lamp.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile